016c7d054a8712a1f76c6c35667ae4848bc81409ee955ab4d7d9c15ac1cc1b68

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:54

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General

Target

2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe
Size

41KB
MD5

f661f11d2e594196448a9b654cd698ca
SHA1

2d42bac5a34ec6baa8bfbb8014b2ee4485d60f69
SHA256

016c7d054a8712a1f76c6c35667ae4848bc81409ee955ab4d7d9c15ac1cc1b68
SHA512

8294f2f38d6c3e7940f5526accc126641dd22169cf24cd7eb742a22f02724024547e577f21a5f515adda4224d6f99280977f435b61cca525f57188d3f9f72f01
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfr9Ora:X6QFElP6n+gJQMOtEvwDpjBsYK6r0ra

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3500 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3500	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe

description	pid	process	target process
PID 3716 wrote to memory of 3500	3716	2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe	asih.exe
PID 3716 wrote to memory of 3500	3716	2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe	asih.exe
PID 3716 wrote to memory of 3500	3716	2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3716

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3500

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
41KB

MD5
1fa463591228235d43cef2d849f7fc57

SHA1
eb0edc605f1fe4d0e26cffd1fb3fc90e3c470286

SHA256
247fc7847371c3fd75ac50eef58bdb5bb7863561b7a60af28c0765e0d37c5eca

SHA512
a84bceda4abed9e8dc87b00577451ecb509dc8d88c617d793fb079418ce3431d06ffd4fdfaaa878b3e6e3c83cdbfee9d2494a2a4df05f52f05758d5848198c70

Download Submit
memory/3500-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3500-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3716-0-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3716-1-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3716-8-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download